Porter-Cable 902387, 6641, 6645, 6642, 6640 Brush Inspection and Lubrication, Service and Repairs

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There is a small spring in the end of the power unit spindle shaft. Be careful not to lose this spring.

Note condition of 3-jaw clutch faces on power unit and screwdriver mechanism. If they are badly rounded where the angular face meets the top surface, or appear otherwise worn or faulty, or if the clutch elements are not securely held in place on their respective shafts by the snap rings, return the entire tool to your AUTHORIZED PORTER-CABLE SERVICE STATION for service.

If the jaws are not seriously worn and there are no other apparent faults in the mechanism, then proceed and be sure that the mechanism and all internal areas are clean and free of chips or other foreign material and brush a thin coat of PORTER-CABLE gear lubricant on the clutch elements and surrounding areas. Reassemble the screwdriver mechanism onto the power unit. Be sure the spring is on the spindle shaft. NOTE: The housing threads are left-hand thread.

BRUSH INSPECTION AND LUBRICATION

For your continued safety and electrical protection, brush inspection and replacement on this tool should ONLY be performed by an AUTHORIZED PORTER-CABLE SERVICE STATION or a PORTER-CABLE/DELTA SERVICE CENTER.

At approximately 100 hours of use, take or send your tool to your nearest Authorized Porter-Cable Service Station to be thoroughly cleaned and inspected; worn parts replaced, when necessary; relubricated with fresh lubricant, if required; reassembled with new brushes; and performance tested.

Any loss of power before the above maintenance check may indicate the need for immediate servicing of your tool. DO NOT CONTINUE TO OPERATE TOOL UNDER THIS CONDITION. If proper operating voltage is present, return your tool to the Service Station for immediate service.

SERVICE AND REPAIRS

All quality tools will eventually require servicing or replacement of parts due to wear from normal use. These operations, including brush inspection and replacement, should ONLY be performed by either an AUTHORIZED PORTER-CABLE SERVICE STATION or a PORTER-CABLE/DELTA SERVICE CENTER. All repairs made by these agencies are fully guaranteed against defective material and workmanship. We cannot guarantee repairs made or attempted by anyone other than these agencies.

Should you have any questions about your tool, feel free to write us at any time. In any communications, please give all information shown on the nameplate of your tool (model number, type, serial number, etc.).

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Contents Español Página Française Personal Safety General Safety RulesElectrical Safety Work AreaService Tools USE and CareSpecific Safety Rules and Symbols for Screwdrivers Replacement PartsExtension Cord Selection Functional DescriptionMotor ForewordTo Adjust Depth Stop Models 6641 To Change HEX Nutsetter Models 6641ABD Driving Drywall Screws Models 6640 To Adjust Depth Stop Models 6640To Change BIT Holder Models 6640 Driving SELF-DRILLING/TAPPING Screws Models 6640To Remove Screws ALL Models MaintenanceKeep Tool Clean Failure to StartService and Repairs Brush Inspection and LubricationAccessories PORTER-CABLE Limited ONE Year Warranty Canadian PORTER-CABLE Delta Service Centers